Medically reviewed by Jenny Sweigard, MD Key Takeaways A mono rash often appears as red or pink flat areas with small bumps.The rash can be triggered by antibiotic use, especially amoxicillin. A mono ...

The rash that develops in mononucleosis typically consists of small red bumps that can occur anywhere on the body, including the face and trunk. On all skin tones, this rash may have pink undertones, ...